UV flatbed printer for some time, print out the screen color bar, usually caused by such problems are nozzle clogging, which is the main factor to affect the universal plate printer picture quality and yield. Learn nozzle clogging contribute to a better understanding of the machine and improve the print quality of the screen.

Pump irons quite like our daily frequently used bike pump nozzle principle, one on the movement is the soul of our sprinklers parts --- piezoelectric crystal, when you find not hit the outlet pump no more than almost two reasons: gas, road barrier or pump irons do not work.

Sprinklers course than to pump much more complex, but also a variety of "jam", substantially in the following situations:

1, the ink accumulated in the head to a certain extent on the outside will spray hole clogging: is the most common way to clogging, because the solvent in the ink must be volatilized into the air in order to make the picture dries, so the ink is a volatile liquid, in the air volatile while clarity out solids. Nozzle holes in the fabric Penhua, always remaining in the surrounding part of the ink, this part of the ink was dried in air, and then slowly make spray hole becomes small even clogged nozzle holes, but because it is external to the nozzle holes, it is easy clean, which is why we often cleaning nozzle reasons.

2,Piezoelectric crystal damage: sure spray nozzle no ink, general Piezo print head can be a year or so, many factories in print workload may also less than a year is normal.

3, Piezoelectric crystal fatigue damage: the phenomenon is sometimes inkjet nozzle spray sometimes not ink,especially in inkjet large (ie spray dark screen) "clogging" phenomenon obviously, the best method is to replace
a new nozzle.

4, the nozzle filter clogging caused the nozzle no ink: the use of longer nozzles, often at night, especially in the printing task is not full shutdown plant a longer time, the ink does not flow in the nozzle, easily adsorbed on the internal filter The network or the wall of the ink passage, so that ink flow cross-sectional area smaller will cause the nozzle no ink phenomenon, dedicated equipment now can help you solve this problem of the nozzle.

5, the viscosity of the ink is too high or too low: The viscosity of the ink is so high that the fluidity of the ink is poor, the amount of ink discharged by the nozzle in the unit time is not enough; the viscosity of the ink is too low, that is too thin, easy in the spray hole pressure transistors Withdrawing intake air, suck not ink, which exhales air; Both will cause nozzle no ink. This often requires the customer the ink storage environment is very important, more than 24 hours before using ink placed under the environment of use of ink as well, because th ink is placed in the low temperature viscosity will be high, while the high temperature viscosity becomes low, the viscosity is very different, the phenomenon of the viscosity difference larger ink mixed use, it will cause ink spray not

6, the drive circuit failure: the aging of the drive circuit of electronic devices and savings too dry ink dirt may affect the voltage of the driving nozzle, resulting in nozzle no ink or ink fluctuating.

7, the type of ink: the part of the manufacturers of ink due to improper control the amount of desiccant drying too fast, easy to cause the ink to plug in an external, although can be cleaned, but frequent cleaning interval, once the nozzle is not used for a long time and there is no timely protect the nozzle when the the next Penhua may cause the nozzle permanent damage.

8,The frequent replacement ink: replacing the ink in many cases may not protect nozzle also affect nozzle inkjet state.

9,Machines use the ambient temperature and humidity: generally recommended temperature is 22 to 25 degrees,humidity of 40 to 70%, high and low temperature affect the viscosity of the ink will produce the nozzle out of ink phenomenon, often mistaken for "nozzle clogging . "

10, eco solvent printer the head drive voltage: the nozzle voltage causes more fluid nozzle inkjet. The nozzle "jam" misconception is that a lot of people think that the ink particles are too thick so that nozzle clogging can definitely say that this is impossible, unless you are a very happy to remove the filter machine customers. Before the ink reaches the nozzle, the first through the spray holes tenth of the size of the filter hole of the filter on the machine, the more important is the ink manufacturer before use more than the machine filter much finer filter material filter ink, why do it? This is a highly professional knowledge, it is difficult to be described in more detailin this, interested customers can explore alone.